#include<iostream>
#include<string>
#include<pthread.h>
#include<unistd.h>
pthread_mutex_t mutex=PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t cond=PTHREAD_COND_INITIALIZER;
void* active(void*arg)
{
    std::string name=static_cast<const char*>(arg);
    while(true)
    {
        pthread_mutex_lock(&mutex);
        //没有对资源是否就绪的判定
        pthread_cond_wait(&cond,&mutex);
        printf("%s is active!\n",name.c_str());
        pthread_mutex_unlock(&mutex);
    }
}
int main()
{
    pthread_t tid1,tid2,tid3;
    pthread_create(&tid1,nullptr,active,(void*)"tread-1");
    pthread_create(&tid2,nullptr,active,(void*)"tread-2");
    pthread_create(&tid3,nullptr,active,(void*)"tread-3");

    sleep(1);
    printf("Main thread ctrl begin...\n");
    while(true)
    {
        printf("main wakeup thread...\n");
        // pthread_cond_signal(&cond);一次唤醒一个线程
        pthread_cond_broadcast(&cond);
        sleep(1);
    }

    pthread_join(tid1,nullptr);
    pthread_join(tid2,nullptr);
    pthread_join(tid3,nullptr);
    return 0;
}